Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors
In this paper, the inelastic material models for Type 316H stainless steel, which is one of the principal candidate materials for elevated temperature design of the advanced high temperature reactors (HTRs) pressure retained components, are investigated and the required material parameters are ident...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/17/4548 |
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| author | Gyeong-Hoi Koo Ji-Hyun Yoon |
| author_facet | Gyeong-Hoi Koo Ji-Hyun Yoon |
| author_sort | Gyeong-Hoi Koo |
| collection | DOAJ |
| description | In this paper, the inelastic material models for Type 316H stainless steel, which is one of the principal candidate materials for elevated temperature design of the advanced high temperature reactors (HTRs) pressure retained components, are investigated and the required material parameters are identified to be used for both elasto-plastic models and unified viscoplastic models. In the constitutive equations of the inelastic material models, the kinematic hardening behavior is expressed with the Chaboche model with three backstresses, and the isotropic hardening behavior is expressed by the Voce model. The required number of material parameters is minimized to be ten in total. For the unified viscoplastic model, which can express both the time-independent plastic behavior and the time-dependent viscous behavior, the constitutive equations have the same kinematic and isotropic hardening parameters of the elasto-plastic material model with two additional viscous parameters. To identify the material parameters required for these constitutive equations, various uniaxial tests were carried out at isothermal conditions at room temperature and an elevated temperature range of 425–650 °C. The identified inelastic material parameters were validated through the comparison between tests and calculations. |
| first_indexed | 2024-03-10T16:37:37Z |
| format | Article |
| id | doaj.art-369970d6643b4451970e1f759ddfc929 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T16:37:37Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-369970d6643b4451970e1f759ddfc9292023-11-20T12:18:24ZengMDPI AGEnergies1996-10732020-09-011317454810.3390/en13174548Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature ReactorsGyeong-Hoi Koo0Ji-Hyun Yoon1Korea Atomic Energy Research Institute, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, Daejeon 34057, KoreaIn this paper, the inelastic material models for Type 316H stainless steel, which is one of the principal candidate materials for elevated temperature design of the advanced high temperature reactors (HTRs) pressure retained components, are investigated and the required material parameters are identified to be used for both elasto-plastic models and unified viscoplastic models. In the constitutive equations of the inelastic material models, the kinematic hardening behavior is expressed with the Chaboche model with three backstresses, and the isotropic hardening behavior is expressed by the Voce model. The required number of material parameters is minimized to be ten in total. For the unified viscoplastic model, which can express both the time-independent plastic behavior and the time-dependent viscous behavior, the constitutive equations have the same kinematic and isotropic hardening parameters of the elasto-plastic material model with two additional viscous parameters. To identify the material parameters required for these constitutive equations, various uniaxial tests were carried out at isothermal conditions at room temperature and an elevated temperature range of 425–650 °C. The identified inelastic material parameters were validated through the comparison between tests and calculations.https://www.mdpi.com/1996-1073/13/17/4548Type 316Hinelastic material modelmaterial parameterelasto-plasticviscoplasticelevated temperature |
| spellingShingle | Gyeong-Hoi Koo Ji-Hyun Yoon Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors Energies Type 316H inelastic material model material parameter elasto-plastic viscoplastic elevated temperature |
| title | Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors |
| title_full | Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors |
| title_fullStr | Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors |
| title_full_unstemmed | Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors |
| title_short | Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors |
| title_sort | inelastic material models of type 316h for elevated temperature design of advanced high temperature reactors |
| topic | Type 316H inelastic material model material parameter elasto-plastic viscoplastic elevated temperature |
| url | https://www.mdpi.com/1996-1073/13/17/4548 |
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